查询词典 acetabular bone

However, the stress load alters in the proximal femur following THA, leading to "adaptable bone reconstruction", which is characterized by thin cortical bone, decreased bone density, and bone loss surrounding prosthesis, in particular calcar femorale.

但是全髋关节置换后股骨近端应力负荷会发生改变，导致股骨近端的所谓"适应性骨重建"，其特点是皮质骨变薄，骨密度下降，引起股骨近端假体周围，尤其是股骨距区骨丢失。

The characteristics of which are reduced bone content, degenerated microstructure of bone tissues, increased fragility of bone and chanciness of bone fracture.

论文单位第四军医大学，点击次数 19，论文页数 98页File Size12388K

Currently, materials to repair bone defects are various. Ideal material for bone transplantation should have properties of osteogenesis, bone induction, bone conductibility and biocompatibility.

目前临床上可用于修复骨缺损的材料较多，但理想的骨移植材料应具有成骨性、骨诱导性、骨传导性及完全生物相容性。

Results The BMS absorbing bone marrow cell has the bestfunction of new bone formation in the 12th week.The second is HA,the cuttle bone haslittle and gelfoam is unable to formate new bone.

结果 12周时，骨基质海绵组成骨能力最强，羟基磷灰石组次之，海螵蛸组成骨能力最弱，明胶海绵组无成骨能力。

RESULTS On the experimental side, there was new bone formation in the bone medullary cavity, the endosteum and the section surface of the cortex at 2 weeks. At 4 weeks, at the center of the blood clot in the tube there was new bone formation and bone defect was completely healed at 8 weeks.

结果 实验侧术后2 周即在骨断端髓腔、骨内膜及皮质断面处有新骨形成，并长入管内血肿，术后4周新骨长入血肿中心，8周完全骨愈合。

The results revealed that there was osteoporosis appeared at 6 weeks in rigid fixating segment.Bone lossing happened at Haver's system, bone absorption revealed after 10weeks on endosteal surface and enlargement of bone marrow. Osteoporosis and thinning of the cortex on fixating segment,especially under steel plate happened due to negative balance of remodeling process of the two surface of the bone.

结果发现：坚硬接骨板内固定后六周时固定段骨即出现骨质疏松，发生在哈佛氏系统的骨丢失，10周后骨内膜表面出现骨吸收、骨髓腔增大，两个表面的骨重建单位的负平衡使固定段皮质骨疏松变薄，特别是在钢板下。

Results: MR examination of bone contusion were mostly less than two weeks, but a few patients were longer than one year: STIR, TIWI were more sensitive lesion detection series in hone contusion (100% and 95.7%). Bone contusion mostly occur at knee, and lesions mainly distributed in the margin area of articular (69.8%), in superior portion of vertebral body(74.l%). Bone contusion following-up showed a line-like hyperostosis and osteosclerosis in contusion area. Histological manifestations of bone contusion were local trabecular micro fractures, edema, hemorrhage and injury of fat tissue.

结果：1多数骨挫伤MRI检查在两周内完成，少数病人时间超过1年；2检出骨挫伤敏感的MRI序列为STIR及T1W/I（100%及95.7%）；3膝关节是骨挫伤的好发部位，病灶主要分布于骨边缘区(69.8%)，在脊柱主要分布于椎体上缘终板下(74.1%)；4骨挫伤影像随访提小病变区出现线状骨质修复，骨髓水肿吸收；5骨挫伤病理为骨小梁显微骨折，骨髓水肿、出血和脂肪损伤。

However, vascularized bone autograft can't provide suitable donor for big mass bone defect, large segment defect and bone defect with joint because of limitation of quantity, size, shape etc of donor. So, people thinks of vascaularized bone allogeneic transplantation .

不过，因受供体数量、规模、形体等因素的限制，对于大块、大段以及包括关节的骨缺损，带血供之自体骨移植，颇有力不从心之感，而同种异体骨移植的实行，似可提供一种新的、有效的手段。

Change in bone:destruction of bone could be found in 6 CT cases and osteosclerosis in 15 CT cases and osteoporosis in 4 CT cases,change in bone couid be found in 12 MRI cases⑥gas in bone could be found in 5 cases which could be observed by CT.

髋关节骨质改变：CT显示单纯性骨质破坏6例，骨质硬化为15例，骨质疏松5例。MRI显示骨质改变为12例。

Results Metaphysis osteoporosis was observed on X-ray and CT in acute stage, the midsection of infarct of bone was isointensity on T1WI and iso/hyperintensity signal on T2WI, the edge of infarct of bone was ring-shaped hypointensity on T1WI and hyperintensity signal on T2WI. Small worm-eaten change and stippled calcification was observed on X-ray and CT in subacute stage, the infarct of bone was iso/hypointensity on T1WI and iso/hyperintensity signal on T2WI, the edge of infarct of bone was ring-shaped hypointensity on T1WI and hyperintensity signal on T2WI. Irregular and wriggle osteosclerosis was observed on X-ray and CT in chronic stage, was hypointensity on T1WI and T2WI.

结果 骨梗死急性期X线、CT表现为干骺端骨质疏松，MR T1WI骨梗死灶中央部分呈等至高信号，T2WI呈高信号，T1WI骨梗死灶边缘呈环形低信号，T2WI呈环形高信号；亚急性期X线、CT表现为小的虫噬样改变，伴有斑点状钙化，MR T1WI骨梗死灶呈等或低信号，T2WI呈等或稍高信号，T1WI骨梗死灶边缘呈环形低信号，T2WI呈环形高信号；慢性期X线、CT表现为不规则状、蜿蜒状骨质硬化，MR T1WI和T2WI均呈低信号。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。